|I am planting Impatiens in a bed 3x15. I am looking for that ice cream effect of all flowers; you said to plant them close so that they grow into each other. How close is that? (We have over 200 of them.) Should I mix peat moss into the soil first?. The soil is weed free and ready for plants. Thanks.
|A rule of thumb for annuals is to plant them as far apart as they ultimately grow wide. In other words, if the plant grows 8 inches tall and 12 inches wide, you would plant them about 12 inches apart. However, since you want a very full look I would suggest planting them slighly closer together than that, say 2/3 their width. This way they will grow into a solid covering sooner. You will also get a better overall coverage by planting them in staggered rows.
There are a number of varieties of impatiens, some much larger than others, so unfortunately I can't tell you exactly how far apart to plant yours. The label information should include the mature size for you.
Impatiens prefer a rich soil with plenty of moisture. Peat moss or any type of organic material will help the soil retain moisture and provide a better soil structure in general.